Home / 843,630.80-1,265,557.20-311,525.60

Finding the Fourth Proportional to 843,630.80, 1,265,557.20 and 311,525.60

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Solution

The fourth proportional to 843,630.80, 1,265,557.20 and 311,525.60 is: 467,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,630.80 : 1,265,557.20 = 311,525.60 : x
  2. Step 2: Convert to fraction form
    843,630.80/1,265,557.20 = 311,525.60/x
  3. Step 3: Cross multiply
    843,630.80x = 1,265,557.20 × 311,525.60
  4. Step 4: Simplify right side
    843,630.80x = 394,253,466,064.32
  5. Step 5: Solve for x
    x = 394,253,466,064.32/843,630.80
  6. Step 6: Final answer
    x = 467,329.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.